Harmonic Response Analysis of Heavy Vehicle Chassis System With HSSS as The Material

The heavy vehicle chassis is the load bearing framework that bears the load and stress acting on it. Maximum stress and deflection are the important criteria for the planning of a chassis. Heavy commercial vehicles mainly used ladder chassis made of rectangular box type cross section. The current paper focuses on designing a heavy vehicle chassis and performing various analyses on it. Modelling and analysis of the chassis are performed in SOLIDWORKS software. The chassis is designed using TATA LPT 2518 TC Truck specifications. The analysis is performed under identical load conditions, by applying usual chassis materials like structural steel, low tensile carbon steel, chrome-moly alloy steel and a comparatively newer material, high specific strength steel (HSSS). HSSS has low density but at the same time has high strength and rigidity thus making it an effective replacement as chassis material. Harmonic analysis performed on the chassis model indicate that HSSS has the least Von mises stress, deformation and highest resonance frequency and that it provides sufficient strength and rigidity to the chassis